CN213716198U

CN213716198U - Teacher gives lessons dust keeper with megaphone

Info

Publication number: CN213716198U
Application number: CN202022705898.6U
Authority: CN
Inventors: 郭炳通
Original assignee: Business College Of Shanxi University
Current assignee: Business College Of Shanxi University
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-16
Anticipated expiration: 2030-11-20

Abstract

The utility model belongs to the technical field of dust keeper, especially, be a teacher gives lessons dust keeper with megaphone, including PMKD, rotary disk and flexible layer, two PMKD are a set of parallel arrangement, and the inside mounting hole that is provided with of board body, the backup pad is being fixed in the PMKD bottom outside, the fixed protection frame that is setting up in PMKD upper end, the fixed limiting plate that is setting up in the inboard edge upper end of protection frame, the bottom surface is setting up the extrusion spring on the protection frame, and the megaphone stripper is being connected on the extrusion spring top, the protection frame upper end is setting up dustproof roof, the PMKD top is setting up the protection roof, the PMKD both sides are setting up the fan piece that opens and shuts. The utility model discloses a rotary disk, screw thread stand, female thread slider, connecting block and flexible layer combined action have solved the length that can't adjust the protection with shielding layer, can't adjust shielding layer according to actual need when in-service use, have influenced the problem that the tone quality of inside megaphone disperses.

Description

Teacher gives lessons dust keeper with megaphone

Technical Field

The utility model relates to a dust keeper technical field specifically is a teacher gives lessons and uses dust keeper of megaphone.

Background

The portable loudspeaker is convenient to carry, and mostly has a small volume, light weight and simple and convenient operation. With the progress and development of science and technology, the portable loudspeaker is not only limited to be used for public address, and new functions are continuously improved, and the portable loudspeaker supports a U disk and a TF card, supports a radio receiving function and a recording function, and also supports a remote control function.

Along with the continuous growth of education and public address and tourism industry, full voice is guaranteed with normal volume by teaching and tour guide through the loudspeaker, teaching quality and tour guide explanation quality are guaranteed to be robust, the birth of the portable loudspeaker solves the problem that teachers and tour guides are worried about after the portable loudspeaker is taken, the portable loudspeaker is convenient to carry and easy to operate, battery replacement is more convenient and rapid, and the portable loudspeaker is deeply praised by teachers and tour guides.

Portable loudspeakers can be divided into: propaganda loudspeakers, entertainment loudspeakers, old man-machine, etc.

The dust keeper of traditional teacher's megaphone for teaching is various, but still has some problems:

1. traditional for teaching megaphone dust keeper can't adjust the protection with the length of shielding layer mostly, can't adjust the shielding layer according to actual need when in-service, the tone quality that has influenced inside megaphone is diverged, the practicality and the dustproof efficiency that have reduced megaphone dust keeper are not high.

2. Traditional for teaching loudspeaker dust keeper can't the circuit etc. that the centre gripping megaphone is connected mostly, install behind the wall at the megaphone, exposed circuit can influence pedestrian's safety, causes certain potential safety hazard, has reduced loudspeaker dust keeper's barrier propterty.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a teacher gives lessons and uses dust keeper, the length of shielding layer is used in the unable adjustment protection of the mostly traditional for the speaker dust keeper of giving lessons, can't adjust the shielding layer according to actual need when in-service use, the tone quality that has influenced inside speaker is dispersed, practicality and the dust keeper that has reduced speaker dust keeper is not high, the circuit that the unable centre gripping speaker is connected mostly, install behind the wall at the speaker, exposed circuit can influence pedestrian's safety, cause certain potential safety hazard scheduling problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a teacher gives lessons dust keeper with megaphone, includes PMKD, rotary disk and flexible layer, two PMKD are a set of parallel arrangement, and the inside mounting hole that is provided with of board body, the backup pad is being fixed in the PMKD bottom outside, the fixed protection frame that is setting up in PMKD upper end, the fixed limiting plate that is setting up in the inboard edge upper end of protection frame, the fixed extrusion spring that is setting up in protection frame upper surface, extrusion spring parallel arrangement has two in protection frame upper surface, and extrudees spring top fixed connection the megaphone stripper, the protection frame is fixed to be set up dustproof roof the top, PMKD is fixed to be set up protection roof in the top, the fixed fan piece that opens and shuts that is setting up in PMKD both sides.

Further optimizing the technical scheme, the rotating disc is rotatably arranged on the inner side of the plate body of the protective top plate, the rotating disc plate body is provided with a fixed insertion hole, an insertion fixing column is arranged in the insertion hole, and the insertion fixing column penetrates through the plate body of the rotating disc and is inserted into the insertion hole in the upper end of the plate body of the protective top plate.

Further optimize this technical scheme, rotary disk lower extreme fixed connection screw thread stand, the rotatory setting in the board body of protection roof in screw thread stand upper end, the rotatory setting of lower extreme is inside the backup pad simultaneously, the screw thread stand outside is provided with the internal thread slider, the internal thread slider is that the screw thread of inboard screw thread and screw thread stand agrees with, the external side fixed connection connecting block of internal thread slider.

Further optimize this technical scheme, connecting block upper end fixed connection is flexible layer, flexible layer upper end is fixed to be set up in one side of protection roof, and the lower extreme is fixed to be set up on the connecting block top, the fixed shielding plate that is setting up of connecting block inboard, the upper frame body of shielding plate body laminating protection frame.

Further optimize this technical scheme, the fan that opens and shuts two are a set of mirror symmetry and set up in lower extreme fixed bottom plate edge, and the fan that opens and shuts is rotatory to be connected the side splint.

Further optimize this technical scheme, flexible layer is the rubber material, and flexible layer comprises a plurality of sheet rubber end to end connection.

(III) advantageous effects

Compared with the prior art, the utility model provides a teacher gives lessons and uses dust keeper of megaphone possesses following beneficial effect:

1. this teacher gives lessons dust keeper with megaphone, it is rotatory to drive the screw thread stand through the rotary disk, make the internal thread slider take place to remove and drive the connecting block and remove, the length is adjusted on the flexible layer of connecting block tensile rubber material, the length of traditional public hone dust keeper for giving lessons can't adjust the protection with the shielding layer has been solved, can't adjust the shielding layer according to actual need when in-service, the tone quality that has influenced inside megaphone is dispersed, the practicality that has reduced public hone dust keeper and the problem that dustproof efficiency is not high.

2. This teacher gives lessons dust keeper with megaphone, through at bottom end fixed bottom plate edge through opening and shutting fan piece swivelling joint side splint, utilize the external circuit of side splint centre gripping, solved circuit etc. that the unable centre gripping megaphone of the majority is connected, install behind the wall at the megaphone, exposed circuit can influence pedestrian's safety, causes the problem of certain potential safety hazard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a detailed view of the side clamping plate connection structure of the present invention;

fig. 3 is the view of the lifting structure of the inner connecting block of the present invention.

In the figure: 1. fixing the bottom plate; 2. mounting holes; 3. a support plate; 4. a protective frame; 5. a limiting plate; 6. a compression spring; 7. a loudspeaker squeeze plate; 8. a dust-proof top plate; 9. a protective roof; 10. rotating the disc; 11. inserting and fixing columns; 12. a threaded upright post; 13. connecting blocks; 14. a shielding plate; 15. a stretchable layer; 16. opening and closing the fan blades; 17. a side clamping plate; 18. an internal thread slider.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a teacher gives lessons dust keeper with megaphone, including PMKD 1, rotary disk 10 and

flexible layer

15, 1 two of PMKD are a set of parallel arrangement, and the inside mounting hole 2 that is provided with of board body, 1 bottom outside of PMKD is fixing

backup pad

3, 1 upper end of PMKD is fixing and is setting up

protection frame

4, 4 inboard edge upper ends of protection frame are fixing and is setting up limiting

plate

5, 4 upper bottom surfaces of protection frame are fixing and is setting up extrusion spring 6, extrusion spring 6 bottom surface parallel arrangement is two on

protection frame

4, and 6 top fixed connection of extrusion spring

loudspeaker stripper plate

7, 4 uppermost ends of protection frame are fixing and are setting up

dustproof roof

8, 1 uppermost end of PMKD is fixing and is setting up

protection roof

9, 1 both sides of PMKD are fixing and are setting up fan piece 16 that opens and shuts.

In this embodiment, the extrusion spring 6 is fixedly arranged on the bottom surface of the protection frame 4, the two extrusion springs 6 are arranged on the protection frame 4 in parallel, and the top end of the extrusion spring 6 is fixedly connected with the loudspeaker extrusion plate 7, so that the loudspeaker in the protection frame 4 can be extruded.

Specifically, the inboard rotation of protection roof 9 board body is setting up rotary disk 10, and fixed jack has been seted up to rotary disk 10 board body, and is provided with plug fixed column 11 in the jack, and plug fixed column 11 passes the board body of rotary disk 10 and inserts the jack of protection roof 9 board body upper end.

In this embodiment, the plug-in fixing column 11 passes through the plate body of the rotating plate 10 and is inserted into the insertion hole at the upper end of the plate body of the protection top plate 9, so that the position of the rotating plate 10 can be conveniently fixed.

Specifically, the lower end of the rotating disk 10 is fixedly connected with a threaded upright post 12, the upper end of the threaded upright post 12 is rotatably arranged in a plate body of the protective top plate 9, the lower end of the rotating disk is rotatably arranged inside the supporting plate 3, an internal thread slider 18 is arranged on the outer side of the threaded upright post 12, the internal thread slider 18 is in threaded engagement with the threaded upright post 12 through an inner thread, and a connecting block 13 is fixedly connected to the outer side of the internal thread slider 18.

In this embodiment, the rotating disk 10 drives the threaded column 12 to rotate, so that the internal threaded slider 18 moves along the threaded direction of the threaded column 12 and drives the connecting block 13 to synchronously lift.

Specifically, connecting block 13 upper end fixed connection is flexible layer 15, and flexible layer 15 upper end is fixed to be set up in one side of protection roof 9, and the lower extreme is fixed to be set up on connecting block 13 top, and connecting block 13 is inboard to be fixed to be set up shielding plate 14, and shielding plate 14 board body laminating protection frame 4's top frame body.

In this embodiment, flexible layer 15 is being connected to connecting block 13 upper end, and the inboard is fixed and is being set up shielding plate 14, can drive shielding plate 14 and flexible layer 15's synchronous lift when connecting block 13 goes up and down.

Specifically, the two opening and closing fan blades 16 are a group of mirror images and are symmetrically arranged at the edge of the lower end fixing bottom plate 1, and the opening and closing fan blades 16 are rotationally connected with the side clamping plates 17.

In this embodiment, two ends of the fixing base plate 1 are rotatably connected to the side clamping plates 17 through the opening and closing fan 16, so as to conveniently clamp and fix the circuit.

Specifically, the flexible layer 15 is made of rubber, and the flexible layer 15 is formed by connecting a plurality of rubber pieces in a terminating manner.

In this embodiment, the flexible layer 15 of rubber material can stretch out under the drive of connecting block 13, conveniently expandes.

The utility model discloses a theory of operation and use flow: in use, the guard frame 4 is inserted along the periphery of the loudspeaker. Make PMKD 1 be located the wall position, utilize mounting hole 2 fixed PMKD 1, rotatory rotary disk 10 drives screw thread stand 12 synchronous revolution, make the internal thread slider 18 in the screw thread stand 12 outside slide along screw thread stand 12's direction, drive connecting block 13 synchronous lift, make connecting block 13 drive flexible layer 15 synchronous lift expand, confirm flexible layer 15's expansion area after, insert the fixed rotary disk 10 in protection roof 9 upper end by the jack of rotary disk 10 upper end with grafting fixed column 11, the board body of side splint 17 is walked around to the circuit of connecting the megaphone, it is inboard to accomodate entering backup pad 3 with side splint 17 again, accomplish accomodating of circuit.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a teacher gives lessons dust keeper with megaphone, includes PMKD (1), rotary disk (10) and flexible layer (15), its characterized in that: two fixed bottom plates (1) are arranged in parallel in one group, and the inner part of the plate body is provided with a mounting hole (2), a supporting plate (3) is fixed at the outer side of the bottom end of the fixed bottom plate (1), a protective frame (4) is fixed at the upper end of the fixed bottom plate (1), a limit plate (5) is fixedly arranged at the upper end of the inner side edge of the protection frame (4), the upper bottom surface of the protection frame (4) is fixedly provided with two extrusion springs (6), the two extrusion springs (6) are arranged on the upper bottom surface of the protection frame (4) in parallel, the top end of the extrusion spring (6) is fixedly connected with an extrusion plate (7) of the loudspeaker, a dustproof top plate (8) is fixedly arranged at the uppermost end of the protection frame (4), a protection top plate (9) is fixedly arranged at the uppermost end of the fixed bottom plate (1), the two sides of the fixed bottom plate (1) are fixedly provided with opening and closing fan blades (16).

2. The dust-proof device of a speaker for teacher's lecture as set forth in claim 1, wherein: the inner side of the plate body of the protective top plate (9) is rotatably provided with a rotating disk (10), the plate body of the rotating disk (10) is provided with a fixed insertion hole, an insertion fixing column (11) is arranged in the insertion hole, and the insertion fixing column (11) penetrates through the plate body of the rotating disk (10) and is inserted into the insertion hole in the upper end of the plate body of the protective top plate (9).

3. The dust-proof device of a speaker for teacher's lecture as set forth in claim 1, wherein: the rotary plate is characterized in that a threaded upright post (12) is fixedly connected to the lower end of the rotary plate (10), the upper end of the threaded upright post (12) is rotatably arranged in a plate body of the protective top plate (9), the lower end of the threaded upright post is rotatably arranged inside the supporting plate (3), an internal thread sliding block (18) is arranged on the outer side of the threaded upright post (12), the internal thread sliding block (18) is matched with threads of the internal thread upright post (12) through internal threads, and a connecting block (13) is fixedly connected to the outer side of the internal thread sliding block (18).

4. The dust-proof device of a speaker for teacher's lecture as set forth in claim 3, wherein: connecting block (13) upper end fixed connection is flexible layer (15), flexible layer (15) upper end is fixed to be set up in one side of protection roof (9), and the lower extreme is fixed to be set up on connecting block (13) top, connecting block (13) inboard is fixed and is being set up shielding plate (14), shielding plate (14) board body laminating protection frame (4) the top frame body.

5. The dust-proof device of a speaker for teacher's lecture as set forth in claim 1, wherein: the two opening and closing fan sheets (16) are a group of mirror symmetry and are arranged at the edge of the lower end fixing base plate (1), and the opening and closing fan sheets (16) are rotationally connected with the side clamping plate (17).

6. The dust-proof device of a speaker for teacher's lecture as set forth in claim 1, wherein: the telescopic layer (15) is made of rubber, and the telescopic layer (15) is formed by connecting a plurality of rubber sheet ends.